zlatnik



April 9, 1929. F. zLATNlK 1,708,646

SECTIONL MOLD Filed May 2, 1928 5 Sheetsesheetml Patented Apr. 9, 1929.

PATENT OFFICE.

FRANK ZLATNIK, F GLOBE, ARZONA, ASSIGNOR TO GLOBE FOUNDRY 6c MACHINECO.,.0F GLOBE, ARZONA, ACORPORATION'OF ARIZONA.

SECTIONAL MoLn 'i t.

kApplication filed May 2, 1928. SerialrNo. 274,466.

My invention pertains to sectional molds of metal suitable for makingchill castings of a type suitable for liners for rod andball mills.

To a certain extent it has been the practice in making cast articles inchill molds formed of metal and in making such articles such as linersfor rod and ball mills, to have the mold made in sometimes two andsometimes three parts. rlhe top and bottom of the mold in such casesusually have integral side or end walls which interit. structions it iscustomary. to have a separate piece forming a closure for one of theopen ends for either the" base or top or cover section of the mold. Adisadvantage ot such type of mold is that when the mol-d warps' orcracks that a large portion of it has `to be discarded; as for instance,the whole ofi the base or the whole of the top or cover section must bediscarded, this causing considerable expense in replacement. Adisadvantage of such types of molds is in their uneven structure. rlheywarpandcrack due to the unequal strains set up in some parts of themol-d, causing considerable expense in replacement. f

An object of my invention is to construct a mold suitable 'for n'ialringchill castings such as liners for rod and ball mills or the like, and tohave such mold made in sections; for instance, it may be considered thatI have a separate base and top or cover section and with these l utilizewall pieces which are formed to tit in the side walls ot the base and.top, thus in client making a complete mold, the parts being heldtogether in a suitable manner.

A. further object of my invention 'is in hingingthe top or cover to oneci" the removable Y side walls and securing all or some of the sidewalls in place with Wedges.

l further object ot' my invention is the cone struction ot a removablegate, this having a sliding shutter which formsV in etlect part of theVside wall on one side of the mold, this gate being designed to restupon a recess formed in one ot the side walls.` i

A further object of mv invention the construction of a series of liilerswhich may be placed in the moldto form articles of a lesser size thanthe full mold, and in connection with these fillers to have a slidabledisplacing block which may be utilized to pry the fillers and thefinished casting loose.

In some' oit these conf Another object of my invention is constructing amold so that the gate is the last part litted, thereby allowinginspection of the mold.

in object el my invention is to construct a mold suitable for n'iakingchilled castings, such as liners for rod mills and ball mills or thelike, in which all of the parts are simple, durable and cheaplyreplaced. The construction ol'- my mold is such that each face and angleof the cast is formed by a separate part, whereby there are no unequalstrains or distortions set up in the mold, and thereby making a casttrue to dimensions.

Myinvention will be more readily understood from the followingdescription and drawings, in which:

Fig. 1 is a plan view of my invention,

Fig. 2 is a side elevation taken in the direction of the arrow -2 ofFig. 1,

Fig. 3 is a vertical cross section on the line 3 3 oi Fig. 1 in thedirection of the arrows,

Fig. 4 is a vertical cross section of Fig. 1 on the line 1-44 in thedirection ofthe arrows,

Fig. 5 is a plan of the base,

. i Fig, 6 is a perspective View of one of' the side wall pieces, v

Fig. 7 is a view of another side wall piece for supporting the gate,

Fig. 8 is a side wall piece forming the hinge connection for the cover,

Fig. 9 is a sit wall piece to be utilized opposite the piece of Fig.` 8,

Fig. 10 is a perspective view the main part of the gate,

. .F l1 is a perspective viewof the sliding shutter for the gate,

F ig. 12 is a perspective view of a. form of liner which may be castinmy mold,

Fig. 13 is a perspective view of a moldliller block, 1 3

Fig. 14E is a plan view` of a modification showing a different manner ofhinging the top or cover.

ln my invention Jthe base is designated by the numeral 11.. This may beconsidered as having end edges 12, side edges 13, an exterior'surliace14 and an interior surface 15. ln the construction illustrated theinterior surface has a `llat edge 16 at each side,

`and is dished downwardly toward the center as indicated at 17 in Fig.3.

Extending outwardly from the sides there are two pairof end lugs 18 andtwo pair of side lugs 19, each of these lugs being provided with averticalpin 2() and two of the lugs on one side and two of the lugs onone end are provided with bolt holes 21.V lt will be noted that theupper surface y22 of Vthese lugs is below the latsnrtaceA 16 at the endsoi:

lustrated as llat, having a rabbet 28 to ac'- eonnnodate the 'edge ofthe cover as hereunder set lorth.

This hinge endpiece has a pair ol lugs 29 extending upwardly, such lugshaving aper-v Y tures 3Q therethrough through which extends CVD Cif

'insertion lof a prying a hinge pintle 31. In addition, these vendpiecesare provided with bolt holes 32. The llanges 33 form a `hingestop. Y f The Yopposite end piece 34 (illustrated particularly in Fig.9) alsohas atlat base 35 with downwardly extending bosses 35 `and a'flat top'36, the base having a rabbet 37 to it over the flat edgeV 16of the base of the mold and the top snrliace also having arabbet 38 toaccommodate the cover et the mold. lt will be noted that the insidetacos 39 of the hinge. end 24 and the end piece'34 are inclined in-Vwardlyand upwardly (note Fig. 3) and that the outside surface 40 isvertical and straight.

The side wall section 41 (shown particularly in Fig; 6) h-as'a ilat base42 with downwardly extending bosses 42 to tit on the lugs 19`at onerside and has a straight and vertical outer surface 43. The top 43 has arabbet 44 to accommodate the cover as hereunder set liorth. There isw aninwardly extending boss 45 which is vshaped on itsflower edge 46 toconform to the shape of theinside surface 17 the base ot the mold andthe top surface 4G is shaped to lit the inside of the cover. The ends 47are shaped to .nt against the inside faces 39 ot' the hinge end piece 24and the opposite end piece 34. Y

'lhe'fends oi the side wall 41 havea cut-ont section 48 tor use ot a prybar in prying thesev sections oli' to open the-mold. This end wall pieceisY also provided with bolt holes 49. There is a recess 50 'formed inthe boss 45, this having adispln-tceahle wedge block 51, such blockhaving a curved cnt-out section 52 for tool for a `purpose hereunder setlo'rth." j Y I The gate supporting side Wall designated generally by the.numeral 53 (illustrated particularly in 7) is somewhat thegeneral shapeof the opposite side wall 41.v This has a flat base 54 with downwardlyextending bosses v55 to tit on the vlugs 19 votithe base. Thispiecehas'a side tace 56 which bears the ends of the end pieces 24 and34.

Itis also provided with a boss "5 7 'fitting in a seat l'o'r the gate,extending through this side wall member '53 from the bos's57 to theouter face. A strengthening member is formed below the :base 54 and isdesigned to tit between the lugs 19. There is also a strengtheningsheltl extending outwardly with a retain-v ving clip 62 attached to theouter tace et such shell, thisrbeing adapted Vto hold the gate in place.The upper surface ol the recess 59 is slightly incliii'ed inward-ly anddownwardly as indicated at 63 (note F 4).

The 'mold pieces tar described are as-V sembled by placing the base 11on a suitable lloor and placing' the hinge end piece in place andtheside piece41 in place.

These, it desired, `1nay be 'secured by'bolts passing through theboltholes 32 in the hinge piece 24 and in the lugs 21, 'and the boltholes 49 in the side piece 41, and the bolt holes 121. lilowever, suchbolts are not really necessary and even it bolts are used itis desirableto insert wedges 34*wedgingbetweenthe ver- 'tivcalfpins 2O and the outerfaceV of the hinge wall 24 and the side Wa1ll'41 (note Figs. 1 and. 2).The otherwall pieces comprising the end piece '34 and the side piece V53to accoin modate the gate are then placed in position resting on thelugs 19 and 18 respectively, and 'these are secured in positionV :bywedges 64.

' Thetop or cover, designated generally by the numeral 65, is formedwith an yunder surlace66to contorni to the shape oir' thefarticle beingcast; and in the .present instance has a slight convex curve from eachside Vforming a reverse 67. This inner face conforms to the shape olfthe upper sui-:Face 46` of the boss 45,k At one side thereis a verticalrecess 68 which preferably has a vertical iaceV 69 parallel. to theside'liace 70 of the topV and kvertical right-angular faces V71extending and having openings to lit -on the hinge,`

cut-ont section y79 leaving horiz'ontal'shoul? vders 80.

It will thus be seen that `there is no fined wall for the side of thegate'81 which llits adlof the side wall piece 41.

jacent the mold. The gate is'openat the top as indicated at 82 acrossits whole measurements. The inside bottom surface 83 of the gate may besloped as indicated in Fig. 4.

A sliding shutter 84 (illustrated in particular in Fig. 11) is formed ofa fiat piece of metal having vertical sidefaces 85 which fit in thefaces 71 ofthe cover. One of the faces 86 of the sliding shutter fitsagainst the face 69 of the cover thus forminga close tit. The face 87fits in the cut-out section of the main portion of the gate against theedges 88.

The shutter has a cut-Out section 89 at the bottom `whichleaves'depending legs 90 on each side, such legs resting on theshoulders 80 at the bottom of the cut-out section 79 ot the main portionof the gate. Therel are lateral lugs 91 at the top of the slidingshutter adapted to facilitate insert-ion and removal of such shutter.Before iitting of the gate it is preferable to clamp the base and thecover of the Vmold by engaging a lsuitable clamp underneath the base andon the flattened surface`92 of the cover.

By this construction it will be seen that the mold can be built up with`the base, removable' side walls and the cover hinged to one of saidwalls, and such cover maybe closed, then the core may be fitted leavinga relatively large opening before fitting of the gate, this openingbeing in the recess59 in the gate supporting side wall 53. Therefore theoperator can examine the interior of the mold and see if it is in propercondition for pouring: The main portion of the gate is then fitted inplace and after thisy is properly ipositioned the sliding shutter isthrust downwardly into place, thus forming a eompleteinold. l

The type of liner made by the mold above described is illustrated inFig. 12, being designated by the numeral 92. `It willbe seen that thishas a curved surface 93 which is adapted to conform to the cylindricalshape of a rod or ball mill, and it has end edges 94 at right angles tothe curvedsurfacel. The side edges 95 are beveled and the top surface 96has two convex curves meeting in a ridge 97. The core leaves a hole 98.

In some cases in opening up the mold the cast liner sticks in the moldand if such is the case it may be pried loose byf inserting a Wedgingorprying tool in the curved por` tion 52 of the displacing wedge block51 `and K thrusting this vblock slightly outwardlyfroin the recess 50 inwhich it fits on the boss 45 It is customary in making liners to havethese of two or more different sizes, and to make smaller' sizes thanthose shown a liller block designated generally by the numeral 99 andshown particularly in Fig. 13, may be inserted. This filler block isillustrated as have ing vertical opposite sides 100 to fit against theface of the boss 45 and to form an inside end wall of the mold. Thelower surface 101 is shaped to `conform to the shape of the base of themold and the top surfacev 102 to conform to the shape of the top of themold (note Fig. 4). The ends 103 conform to the inside faces 39 of thehinge end wall 24 and the opposite `end wall 34.

In Fig. 14 I illustrate an alternative construction in whieh'the hingeside wall 105 is opposite the wall 106, having a gate 107 therein. Inthis case the other blocks are made substantially the same as in thefigures above described in order to form a mold having the base'and thecover with the four removable sides. u

From the above description it will be noted that a characteristicfeature of my invention is that the mold is made np of a multiplicity ofparts and that the base and the cover may be considered as substantiallyiat main sections and that te ce-operate with these and to forni theclosed mold there are the two side andtwe end pieces which when held inplace and with the gate also in position forma closed Imold. Therefore,if any of these parts become marred in use, warp or crack, it is ingsubstantially the replacement of the main structural elements of themold.

Various changes may be made in the principles of my invention `withoutdeparting from the spirit thereof, as set forth in the description,drawings and claims.

I claim: y

1. A sectional mold having a base, a cover, a series ofremovable sidewall pieces, and a gate restingon one of said side wall pieces.

2; A sectional mold having a base, a cover, a series of side wall piecessupporting the cover above the base, said pieces being remov able, and agate supported by one of said side wall pieces. e

3. A sectionalmold comprising in combination a base, a series of lugsconnected thereto, a coveiava series et sectional. walls supported onthe lugs and forming a support for the cover, a gate mounted on one ofthe side walls, and meansV on the lugs to Wedge the lsectional sidewalls in position. y

` 4. A sectional mold comprising in combi# nation a base, a cover, ascriesof sectional side walls mounted on the base and forming a supportfor the cover, and a gate mounted on one of the side wall sections, saidgate be-V nation a base, a cover, a series of sectional side Walls, atleast two of said walls having y an inwardly extending boss forming asupport torf the cover and engaging the base, and a gate resting on oneof the sectional side walls.

6. A sectional mold as claimed in claim 5,

les

the gate being formed in two parts and having a sliding shutter, saidshutter .fitti-ng partly in said recess in. alignment with. the boss.

9. A sectional'mold as claimed in claim 7, two of theend wall sectionshaving a rabbet in the upper edge to engage the cover and kform asupport, and having a rabbet adjacent the lower edge to iit on the saidbase. y

10. A sectional `mold having abase 4with'a plurality of lugs 'extendingoutwardly from each ofthe sides, a plurality of sectional side Wallseach having bosses on the lower surface to'bear on said lugs, pins onthe lugs, wedges between the side walls and the pins, and a gatesupported .on one off' the sectional side walls. v V .y

ll. A sectional mold as claimed in 10, the sectional sid-ewallsupporting thegate having' a recess from its outer i'ace toits innerface, the gate resting in said recess, means to engage the outer wall ofthe gate, the said cover having a cut out section and a sliding shutterfor the Oate .fittino' in saidcut out section. g

l2. .A .sectional .mold comprising in coiiibi*V nation a base, a cover,a series ofV removable VVside wall sections, one of .said sectionsforming a hinge connection for the coversaid side wall sections'beingmounted on vthe base and forming asupport for the cover, and agatesupported on one of the sidewall sections and having an engagement onone side with a cutout section of the cover. y

13. A sectional .mold as claimed in claim 12, the base 'having a* seriesof lugs extending outwardly thereiirom, the side wallsectionsbeingsupported on the lugs, pins on the lugs, and wedges-iitted between'the` pins and the side wall sections. Y 1. 14T. A sectionalmold-comprising in coinbination a base, a'- plurality voit :sectionalside walls detachably mounted on the base, a cover hinged to one of said.side walls, said cover being supported onsaid walls, the .base .havinga recess thereinand the cover having an opening, a core fitted in theopening oi' `the cover and engaging the recess ofthe base, one

Y of said side walls having a recess from its outer to its inner faceleaving a large openblock mounted therein, said block having.

means to engage saine with a prying. tool to separate a casting from amold.

16. In a sectional'inold a base,a cover, .a plurality ort sectional sidewalls mounted on the base and forming a supportfor vthe cover, one ofsaid side walls having a boss with a recess, a slidable wedge blockmounted in the said recess and having ineans to engageV aprying tooltherewith, and aiiller block Vpositioned in the mold .adjacenttli'e saidboss and adapted to be displaced by lthesaidwedge block in the openingof the mold. y

Y .17. Ina sectional'inold a base, `a cover, .a plurality of lsectionalside walls mounted on the base and supporting the coverfone of saidsidewalls having a recess from its outer toits inner face forming alarge opening for .inspection of the mold, .and a gate formed in twoparts, one of said parts having abase,

an outer and two side walls fitted in the said recess and a slidinglshutter:mounted on. the,k

port for the cover,cone of said' walls havinga pair of lugs withapertures therein, a hinge pintle fitted in saidxapertures, hinge armslon the cover engaging the pintle, and .agate niountedina' recess on oneof the side walls and Ahaving' a closure-against one side oit the.

cover. p Y 19. A sectional mold as claimed in claim 18,

tliebase havingfa `recess in its uppersurface`V thecover havinganopening and a tapered.

core iitted in said opening and engaging the said* recess. 1

20. A sectionalfniold comprising nation a base,a cover, and. fourwall'sections detachably supported on the base and Aforni-- ing asupportftorthe cover, one of' said walls in combii having a vrecess with a gateiitted therein and supported on such wall, a pair of the walls having lacut-out section for Vinsertion of a pry` bar to pry -the walls away fromthe base and` the cover.

V'In testimony whereof I 'have signed myn naine to this sp'ecitication.

'FRANKZLATNIK Y

